Scatter plots- Lines of Best Fit

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

Front

What does a line of best fit represent in a scatter plot?

Back

A line of best fit is a straight line that best represents the data points in a scatter plot, indicating the overall trend of the data.

Front

What does a positive slope in a line of best fit indicate?

Back

A positive slope indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative slope in a line of best fit indicate?

Back

A negative slope indicates that as one variable increases, the other variable tends to decrease.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that is significantly different from other data points in the scatter plot, which can affect the line of best fit.

Front

How can you determine if a trend line is a good fit for the data?

Back

A trend line is a good fit if it closely follows the pattern of the data points, with most points near the line.

Front

What does it mean if most data points are below the trend line?

Back

If most data points are below the trend line, it may indicate that the trend line is not a good fit for the data.

Front

What is the purpose of drawing a line of best fit?

Back

The purpose of drawing a line of best fit is to summarize the relationship between two variables and make predictions based on the data.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

Front

What does it mean if a scatter plot shows no correlation?

Back

No correlation means that there is no apparent relationship between the two variables, and changes in one do not affect the other.